A Woolworths spokesperson confirmed to 9Honey that the markdowns depend on stock levels for the day, and are at the manager's discretion.

"Like all retailers, we work hard to minimise our stock loss with better processes in our stores, so it’s rare for us to have roast chickens on show minutes before closing" the spokesperson told 9Honey.

"To help manage stock levels throughout the day and reduce food waste, store managers can elect to mark down roast chickens.

"Any markdowns are clearly displayed on applicable products and subject to the store manager’s discretion."

We've seen shoppers take advantage of a similar hack at Coles before, with the offer being around for years at the major supermarket chains.

A woman photographed a sticker that was accompanied by an empty shelf with the promise that free hot chicken would be distributed once the supermarket had run out of stock.

Coles sticker displays deal (Facebook)

“If you’ve missed out on a Coles hot roast chicken from 11am to close, your next one is free” the sticker reads.

However, it was also confirmed that the offer was not available at every Coles outlet.